Predjama Castle

01Hanson's 1998 paper listed nine developmental steps from dead matter to star-colonizing civilization; each step is a candidate filter.
02Finding microbial life on Mars, Hanson argues, would be the worst possible news — it suggests the filter lies ahead, not in abiogenesis.
03Hanson also developed 'futarchy,' a governance system where policy is decided by prediction markets rather than elected officials.

Anthony "Tino" De Angelis

Built directly into the mouth of a vertical cave high on a cliff face in Slovenia, Predjama Castle housed a rebel knight named Erasmus of Lueg who held off a siege for over a year by receiving supplies through a secret tunnel.